One way to distinguish black holes comes from the mass of black holes. The mass of astrophysical black holes is heavier than a particular mass (around 3 solar masses [1]}, [2]}). Some specific mechanisms can produce around 1 solar mass astrophysical black holes, see [3]}, [4]}. However, PBHs have a different mass range. The mass of PBHs can be roughly estimated as follows [5]},
\(M \sim \frac{c^3 t}{G} \sim 5.03 \times 10^{4} \left(\frac{t}{1 \mathrm {s}}\right) M_{\odot }~,\) 
